Patent US2745475A successfully refreshed from Google Patents.
US2745475A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermochemical scarfing devices
Assignee: Union Carbide Corp
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Filing: 1950-08-17
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Granted: 1956-05-15
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Expires: 1970-08-17
Abstract
No abstract record available.
Inventors
- 👤 Ivan P Thompson
- 👤 Allmang William
- 👤 William C Weidner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:03
CPC Classifications
B; B23; B23K; B23K7/00; B23K7/06; Y; Y10; Y10S; Y10S239/00; Y10S239/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
132 words
IN APPARATUS FOR THERMOCHEMICALLY SCARFING METAL BODIES, A SURFACE CONDITIONING HEAD COMPRISING A NOZZLE BLOCK HAVING A WIDE CONTINUOUS SLOT THEREIN ADAPTED TO DISCHARGE A SHEET-LIKE STREAM OF OXIDIZING GAS IN A ZONE EXTENDING ACROSS A METAL BODY, SAID SLOT BEING ADAPTED TO BE DISPOSED AT AN ACUTE ANGLE OF IMPINGEMENT TO THE WORK SURFACE OF SAID METAL BODY, THE LOWER SURFACE OF THE UPPER WALL OF SAID SLOT EXTENDING SMOOTHLY AND CONTINUOUSLY FORWARDLY AND TERMINATING IN A FRONT EDGE BEYOND THE FRONT EDGE OF THE LOWER WALL OF SAID SLOT IN OVERHANGING RELATION THERETO FOR A DISTANCE MEASURED ALONG SAID SLOT AND GREATER THAN THE SPACING OF SAID WALLS, TO BRING THE FRONT EDGE OF SAID UPPER WALL CLOSE TO THE HORIZONTAL PROJECTION OF THE FRONT EDGE OF SAID LOWER WALL.
Claim 2
Dependent Claim
132 words
IN APPARATUS FOR THERMOCHEMICALLY SCARFING METAL BODIES, A SURFACE CONDITIONING HEAD COMPRISING A NOZZLE BLOCK HAVING A WIDE CONTINUOUS SLOT THEREIN ADAPTED TO DISCHARGE A SHEET-LIKE STREAM OF OXIDIZING GAS IN A ZONE EXTENDING ACROSS A METAL BODY, SAID SLOT BEING ADAPTED TO BE DISPOSED AT AN ACUTE ANGLE OF IMPINGEMENT TO THE WORK SURFACE OF SAID METAL BODY, THE LOWER SURFACE OF THE UPPER WALL OF SAID SLOT EXTENDING SMOOTHLY AND CONTINUOUSLY FORWARDLY AND TERMINATING IN A FRONT EDGE BEYOND THE FRONT EDGE OF THE LOWER WALL OF SAID SLOT IN OVERHANGING RELATION THERETO FOR A DISTANCE MEASURED ALONG SAID SLOT AND GREATER THAN THE SPACING OF SAID WALLS, TO BRING THE FRONT EDGE OF SAID UPPER WALL CLOSE TO THE HORIZONTAL PROJECTION OF THE FRONT EDGE OF SAID LOWER WALL.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-15 | 1959-11-14 | 1960-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-15 | 1963-11-14 | 1964-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-15 | 1967-11-14 | 1968-05-15 | $7700.00 | Window Closed / Lapsed |